package com.caicai.test2;

import org.w3c.dom.Node;

public class Stack1 {
	private Node first;
	private int N;
	public Stack1(){
		Object obj;
		Node next;
	}
	public boolean isEmpty(){
		return first==null;
	}
	public int size(){
		return N;
	}
	public void push(Object obj1){
		
		
	}
}
